package com.guiguli.StringBuilder;

public class StringBuilderDemo4 {
    public static void main(String[] args) {
        //1.定义数组
        int[] arr = {1,2,3};

        //2.调用方法把数组变成字符串
        var str = arrToString(arr);

        System.out.println(str);
    }
    public static String arrToString(int[] arr){
        StringBuilder sb =  new StringBuilder();
        sb.append("[");
        for(int i=0;i<arr.length;i++){
            if(i ==  arr.length - 1)
                sb.append(arr[i]);
            else
                sb.append(arr[i]).append(", ");
        }
        sb.append("]");
        return sb.toString();
    }
}
